• HOME
  • QUIZ
  • CONTACT US
EXAMIANS
  • COMPUTER
  • CURRENT AFFAIRS
  • ENGINEERING
    • Chemical Engineering
    • Civil Engineering
    • Computer Engineering
    • Electrical Engineering
    • Mechanical Engineering
  • ENGLISH GRAMMAR
  • GK
  • GUJARATI MCQ

Electrical Machines

Electrical Machines
In DC machine torque is proportional to which of the following?

None of these
 armature current(Ia)
 flux(φ)
 both A and B

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Drop in speed from no load to full load is very high in

 Shunt motor with interpoles.
 Series motor with interpoles.
 Cummulative compound motor with interpoles.
  Series motor without interpoles.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
An 8 pole DC generator has 500 armature conductors and useful flux per pole of 0.065 Wb. What will be the emf generated if it is lap connected and runs at 1000 rpm. What must be the speed at which it is driven to produce the same emf if it is wave wound?

 2166.67V, 230 rpm.
 541.67V, 200 rpm.
 2166.67V, 270 rpm.
 541.67V, 250 rpm.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Hopkinss test in DC motor is conducted at ?

 Low load.
  Full load.
 No load.
 None of these.

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
A 3-phase, 50 Hz, 4 pole induction motor is running at 1440 rpm and rotor input power is 2KW. Find the rotor copper loss?

 60W
 80W
 40W
 100W

ANSWER DOWNLOAD EXAMIANS APP

Electrical Machines
Wave winding is employed in DC machine of

 high current and low voltage rating.
 low current and low voltage rating.
 high current and low voltage rating.
  low current and high voltage rating.

ANSWER DOWNLOAD EXAMIANS APP
MORE MCQ ON Electrical Machines

DOWNLOAD APP

  • APPLE
    from app store
  • ANDROID
    from play store

SEARCH

LOGIN HERE


  • GOOGLE

FIND US

  • 1.70K
    FOLLOW US
  • EXAMIANSSTUDY FOR YOUR DREAMS.
  • SUPPORT :SUPPORT EMAIL ACCOUNT : examians@yahoo.com

OTHER WEBSITES

  • GUJARATI MCQ
  • ACCOUNTIANS

QUICK LINKS

  • HOME
  • QUIZ
  • PRIVACY POLICY
  • DISCLAIMER
  • TERMS & CONDITIONS
  • CONTACT US
↑